Homeowner checklist

Roof underlayment and flashing: the layers that manage a leak

Use these steps to plan, check and keep a record of your next actions.

• Ask for the exact underlayment and membrane products and their locations.
• Review details at valleys, walls, penetrations and roof edges.
• Confirm material compatibility and the installation sequence.
• Arrange documentation before the covering conceals the work.
• Keep inspection records, product instructions and warranty information.

Notes & questions to follow up